Magnetic coil structure



9 N. DINION 2,125,431

MAGNETIC COIL STRUCTURE Filed Feb. '7, 1936 INVENTOR. /%,zz& BY

ATTORNEYS Patented Aug. 2, 1 938 UNITED STATES PAT ENT- OFFICE MAGNETIC con. STRUCTURE Nathan Dinion, Easton, Pm, asi'ignor to Magnetic windings Company, Easton, Pa, a corporation of Pennsylvania Application February '1, 1936, Serial No. 62,790

2 Claims.

inexpensive spacing means, for the terminal leads of coils of the above character, which is such that the leads, or at least such portions of them as are confined or housed within a finished coil unit, are

D positively held in a definite spaced relation, and

which is also such as to enhance the general ap pearance of the finished unit.

Other objects and advantages of the invention will become apparent from the following description, taken in connection with the accompanying drawing in which?- Fig. l is a perspective view of one form of coil to which terminal leads are adapted to be connected and with which spacing means embodying the present invention may be employed. Fig. 2 is a perspective view of a, spacing element embodying the present invention and adapted for use with the coil of Fig. 1. Fig. 3 is a view similar to Fig. l and showing the coil thereof provided with terminal leads and in association with the spacer element appearing in Fig. 2. 'Fig. 4 is an end view of the assembly shown in Fig. 3 and illustratlng the nicety of appearance of such coil when viewed from an end thereof, particular reference being had to that end of the coil from which-the leads extend. Figs. 5 and 6 are views similar to that of Fig. 2 and illustrating, respectively, modifled forms of spacing elements.

- Although the invention may be employed in connection with various types of coils, it is herein illustrated in association with a coil having a rectangular core member 5, which is of tubular formation and composed of suitable insulating material such as paper, cardboard, or the like. As shown most clearly in Fig. 1, opposite ends 6 and l of the wire winding carried by the core 5 are secured to a pair of terminals 8 and i0, respectively, the winding being tapped at an intermediate point, from which is led a tap conductor 55 it and il,'all of which are adaptedto protrude ii, the outer end of which is attached to a ter-- from the coil unit at one end thereof in parallel relation and in the same plane.

Where a cqil is provided with, for example, three terminal leads as illustrated in Fig. 3, the form of spacing element illustrated in Figs. 2 and 5 3 and there indicated as a whole by the numeral it! may be employed to advantage. The spacing element I8 is constructed from suitable flat insulating sheet material, such as cardboard, and is characterized by the fact that it is relatively 10 thin but has a thickness substantially equal to the diameter of the terminal leads and is of a sub:

stantially U-shape formation, the width of the element being substantially less thanthe width of the face of the coil structure to which it is to be applied, andits length being equal to or possibly slightly less than the length of such face as measured in the direction of. the longitudinal axis of the coil. The fingers 2B of the spacing element it are provided at their outer ends with inwardly projecting lugs 2 I whichiorm with each other ,a gap 22, the width of which is slightly less than the width of the space 2d aiforded intermediate the fingers themselves. The width of the gap 22 is soproportioned with relation to the overall 25 diameter of a terminal lead, the lead it in the present instance, as to snugly accommodate the same, whereas the width or the space 24 is such as to readily accommodate the terminal i2 and any reasonably excessive amount of solder that may be applied thereto in attaching to said tenminal the tap conductor 6 l and the bared end of the terminal lead H.

In order to incorporate the spacing element l8 in 'the coil unit during the manufacture of such unit, it is placed in the position illustrated in .Fig. 3, whereupon a binding tape 25 of suitable material, such aspaper, is adhesively fixed to the spacing element and to the peripheral surface of the coil unit, the tape thus serving as a means 40 for holding the spacing element in a proper position on the coil structure preparatory to the finishing operation which may include the application of, for example, the customary binding or encasing material 26 in strip form as shown in Fig.,4. I

From the foregoing description, it will be ob-' served that the terminal leads i5, i6 and H are held in a definite and parallel relation-to each other in the finished coll unit, because of the fact that thelead H is snugly'accommodated within the gap 22 provided intermediate the outer ends of the fingers of the spacing element 18 and because of the fact that the other terminal leads l5 and 16 are snugly'housed within the space aflorded at opposite sides or the spacing element and intermediate the cell structure and the bindin: or encasing material 28 carried thereby.

As to the forms 01' the spacing element I8 and II", Figs. 5 and 6, their formations are such, as will be understood in view 01' the foregoing description of the spacing element l8 shown in Figs. 2, 3 and 4, that they are especial- 1y adapted for use in association with coil structures which are characterized, at least in part, by the fact that they are, respectively, equipped with tomand live terminal leads, two of which in each instance are adapted to assume positions at opposite sides 01' the spacing element corresponding to the positions in which the terminal leads II and ii are illustrated with relation to the spacingelement l8. It is to be observed, however, that the spacing elements 18 and II" may be employed in connection with coil units having, respectively, two and three terminal leads, each of the two leads in the former instance and each of the three leads in the latter instance being adapted to occupy positions corresponding to the position inwhich the terminal lead H is illustrated with relation to the spacin: element It.

Although the spacing elements herein shown and described may, as a group, be employed in connection with coils having terminal leads ranging in numbers from two to live, as explained, it will be understood that the invention in not limited to the particular embodiments herein disclosed but may be varied or further modified to meet various requirements without departing from the spirit of the invention or the scope of the following claims.

What is claimed is:

1. A magnet coil structure comprising a coil having a plurality of terminal leads extending from the periphery of said coil in parallel relation to one another and in the same plane, a spacing element of fiat insulating sheet material arranged in contact'with the periphery of said cell, said sheet material having a thickness substantially equal to the diameter of the terminal leads and being in the form of a body portion from which extend parallel fingerswhich enter the spaces between the terminal leads, and means for holding said spacing element in position on the periphery of said coil.

-2.' A magnet coil structure comprising a coil having a plurality of terminal leads extending from the periphery of said coil in parallel relaticn to one another and in the same plane. a spacing element of flat insulating sheet material arrangedin contact with the periphery of said coil, said sheet material having a thickness substantially equal to the diameter of the terminal leads and being in the form of a body portion a from which extend parallel fingers whichenter the spaces between the terminal leads, said fingers having lugs projecting laterally therefrom and'engaging the terminal leads,

and means for holding said spacing element in position on the periphery of said coll.

NATHAN DINION. 

